Dishwashing machine



Jan. 24, 1928. 1,657,310 H. D. MAGGIO DISHWASHING MACHINE Filed July 21. 1926 Illa Patented Jan. 24, 1928.

UNITED STATES PATENT OFFICE.

HENRY D. MAGGIO, OF LOS LANGELES, CALIFORNIA, ASSIGNOR OF ONE-HALF TO GEORGE It. ROBERTS, OF LOS ANGELES, CALIFORNIA.

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Application filed July 21,

My invention is a dish washing machine in which the dishes may be placed in a holder or the like immersed in the water and given a rocking and up and down motion therein to cleanse the dishes of dirt or the like.

' An object of my invention'is to construct a dish washing machine having a holder for dishes formed of open mesh fabric or the like, this being mounted in a tank having one end suspended and the other end connected to a crank so that the dishes are given an up and down and alateral motion through the water in the tank, thus causing the dirt to be washed 0d the dishes and settle in the bottom. The crank is preferably driven by an electric motor housed in. the top of the tank in a water-tight compartment.

Another object of my invention is forming the cover of the tank with a perforated tray so that dishes may be placed thereon and scalded or the like and then left to dry,

' the water dropping into the inverted cover.

' My invention is illustrated in the following drawing, in which;

Figure 1 is a side elevation of my dish washing machine with part broken away, showing the crank and connecting rod for operating the same;

Fig. 2 is a vertical transverse section on the line 22 of Fig. 1;

Fig. 3 is a longitudinal section on the line 3-3 of Fig. 2; Fig. 4 is a horizontal section on the line 4- of Fig. 1, in the direction of the arrows;

Fig. 5 is an inverted view of the cover.

The general construction of my invention comprises a tank 1 having a base 2, opposite side walls 3 and end walls 4, these being 4 formed water tight. Short permanent legs 5 are secured to the tank to be utilized when the device is placed on a table or the like and longer detachable legs 6 may be bolted to the tank for placing on the floor. The

tank is provided with a suitable cover 7 havin a perforated plate 8 extending di agona ly thereacross,, forming a rack for placing dishes for scalding or drying same. The dish holder construction is substantially as follows:

A receptacle 9 for the dishes is constructed with a base 10 preferably formed of a plate of metal having perforations or large openings 11. The receptacle proper is preferably formed of woven wire as indicated 1928. Serial No. 128,925.

by the numeral 12, in the form of a basket. box or the like. Lugs 13 are secured to one end of the plate and fit over a lower rod 14. Connecting links 15 extend from this rod to brackets 16 to which they are connect- 8" ed by an upper rod 17.

The other end of the plate 11 has lugs 18 or the like which are connected to a crank 19, this being journaled in one side of the tank as indicated by the numeral 20 and 66 passing through the other side through a water-tight bearing 21. The outer end of the crank 22 is connected to the connecting rod 23 bya suitable pin or the like, this latter being connected to a second crank 24 which is mounted on a driving shaft 25 which extends through one of the sides of the tank having a journal 26 at its inner end supported by the motor box 27, a journal 28 being formed in the side wall of the tank. A worm gear 29 is secured on the shaft 25 and meshes with a worm 30 driven by the electric motor 31. The connecting rod and the two outside cranks are preferably covered by a protective covering 32 and the tank 80. may be drained through an outlet 33.

The manner of operation of my dishwashing machine is substantially as follows:

It will be understood that the dishes to be washed may be stacked in the receptacle 9 in any suitable ,manner', being preferably placed on edge and packed sufliciently tight together that they will not break. Hot soapy water is then preferably poured over the dishes filling the tank to the desired level and the cover placed over same. The electric motor is then started and throu h the reduced gear operates the upper cran with a relatively slow motion, this being conveyed by the connecting rod to the lower crank,

this crank being given a rotary motion.

It will thus be seen that the end of the receptacle having the dishes near the crank is given a rotary motion substantially as great as that of the crank 19 and the other end suspended from the links 15 has substantially only an oscillatory movement. Therefore the dishes are raised up and down as well as given a movement of translation through the water in the tank, thus swirlm5 ing the water completely around the dishes and cleansing same. The cover may then be taken (iii the tank and put on a suitable ta ble or the like and the receptacle 9 bodily lifted out of the tank, the dishes being stacked on the cover. They may if desired be scalded or left to dry.

While my invention has been illustrated as particularly adapted for a small type of dish washer suitable for household use, it is apparent that it may be made in various sizes suitable for large restaurants, hotels or the like. It is obvious that if desired the electric motor may be eliminated and the lower crank operated by hand as would be satisfactory for small households.

It is obvious that the various features of my invention having to do with the general construction and the specific features may be considerably changed without departing from the spirit thereof as setforth in the description, drawings and claims.

Having described my. invention, what I claim is: v

1. A dish washing machine comprising in combination a tank, a foraminous receptacle, means for suspending one end. of the receptacle to allow swinging movement, a crank journaled in the walls of the tank and extending through one of such walls, means connecting the crank to the receptacle, an electric motor mounted in the upperportion of the tank and having ajdrive shaft with a motor crank thereon, and a connecting rod outside the wall of the tank through which the crank extends, and-connecting the motor crank and the crank in the-tank'to actuate said latter crank, hence movethe receptacle.

the tank through which the said crank extends, a motor crank on said shaft, and a connecting rod between the motor crank and the crank on the outside of the wall of the tank through which the shaft in the tank extends.

3. A dish washing machine comprising in combination a tank, a foraminous receptacle a bracket in the tank, a link suspende therefrom, means connecting the link to one end of the receptacle, a crank journaled in the tank, means connectin the crank to the other end of the receptac e, means exterior of the tank to rotate the crank, the means to rotate the crank comprising an electric motor mounted in a motor box in the upper portion of the tank, and havin a drlven shaft extending through the tank havin a crank end with a connecting rod att ed thereto, said rod being connected to the pro-- jecting end of the crank supporting the receptacle.

4. A dish washing machine com rising in combination a tank, a air of li means supporting said links om the upper portion of the tank, a plate connected'to the lower end of the links, a crank journaled in the walls of the tank and having a crank end outside of the tank, a foraminous receptacle supported on the plate, means external of the tankto rotate the crank end, the means to rotate the crank end comprising a motor mounted in a motor box in the upper portion of the tank, the motor having a shaft with a worm thereon, a worm gear mounted on a driving shaft, said shaft being journaled in the box and in one of the walls of the tank, and having a crank thereon, and a connecting rod connecting the second crank and the crank end.

In testimony whereof I have signed my ll name to this specification.

HENRY D. MAGGIO. 

